The hardware system is in the charging state, VSYS is loaded, and VBAT is also loaded. It has been charging for less than 20 hours, and it is found that the battery is under voltage protection. The customer schematic diagram is as follows
My analysis here may enter the safe timer state, and exit the charging mode after 20 hours. However, according to the manual, the voltage drops to VRECHG will enter a new charging cycle, and the Safe timer will be reset at the same time.
Please help us to look at the problem, thanks.